NBC will host auditions for its live production of "Hairspray" — based on the 1988 John Waters movie — at the Hippodrome on Sept.15, giving fans a chance to participate in a dance routine in the live musical.

Judging the performances will be actress Maddie Baillio, who will play Tracy Turnblad in the NBC show; Brooke Engen, who hires the show’s dancers and works closely with choreographer Jerry Mitchell; and an NBC executive.

Those auditioning can line up at the Hippodrome starting at 8 a.m. At around 10:30 a.m., groups of 300 will be brought in the building to practice the dance and perform for the judges.

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The top events and musical acts for Baltimore’s third annual Light City festival were announced Tuesday morning. (Kevin Richardson/Baltimore Sun video)

The top events and musical acts for Baltimore’s third annual Light City festival were announced Tuesday morning. (Kevin Richardson/Baltimore Sun video)

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Billy Corgan is getting the band back together. The Smashing Pumpkins announced that there would be a tour, including an Aug. 13 stop at the United Center. (Feb. 15, 2018)

Billy Corgan is getting the band back together. The Smashing Pumpkins announced that there would be a tour, including an Aug. 13 stop at the United Center. (Feb. 15, 2018)

The judges will select three finalists. The winner will be announced on WBAL the morning of Sept. 20, according to an NBC spokeswoman.

WBAL has posted an instructional video featuring "Hairspray Live" cast member Derek Hough, who will play Corny Collins, breaking down the choreography step-by-step to prepare "Hairspray" hopefuls.

John Waters talks about his inspiration for the story and the Baltimore Symphony Orchestra performance of "Hairspray."

John Waters talks about his inspiration for the story and the Baltimore Symphony Orchestra performance of "Hairspray."